Pedal mechanism.



PATENTED SEPT. l, 1908.

G. B. KELLY. PEDAL MLGHANISM.

APPLICATION FILED FEB.11,190B.

GEORGE B. KELLY, OF JAMAICA PLAIN, MASSACHUSETTS.

PEDAL MECHANISM.

Specicaton of Letters Patent.

Patented Sept. 1, 1908.

Application filed February 11, 1908. Serial No. 415,289.

To all whom it may concern.'

Be it known that I, GEORGE B. KELLY, a citizen of the United States, anda resident of Jamaica Plain, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements inPedal Mechanisms, of which the following is a specification.

This invention relates to a pedal mechanism and particularly to a pedalmechanism used for operating air pumping bellows such as are provided inpneumatic playing attachments for musical instruments.

The object of my invention is to provide a new and improved pedalmechanism for this purpose, which is simple in construction, effectivein use and so constructed as not to produce any noises which would orcould interfere with the music produced.

In the accompanying drawings, a side elevation of my improved pedalmechanism is shown in connection with the pumping and storage bellowsand the lower part of the casing containing the mechanism.

The pumping bellows 1, of which there are usually two in an instrument,are of conventional construction and provided with springs 2 2, whichtend to collapse these bellows. These pumping bellows exhaust the airfrom the storage bellows 3 also of conventional construction. The pedals4 are pivotally mounted on a frame 5 pivoted at 6 in the casing 7 of theinstrument which frame can be swung within the casing when the pedalsare not to be used or can be swung out, as shown, for use of the pedals,this frame being provided at its outer end with a support 8. To themovable board 9 of each pumping bellows 1, an angle piece 10 is securedin such a manner that one arm of the angle piece projects beneath thebottom'edge of the board toward the front of the casing and each anglepiece is provided with a lug 11 forming a stop or shoulder. A recess 12is lformed in the bottom edge of the bottom member of each angle piece10 in advance of the stop lug 11 and in this recess a wooden cylindricalpiece 13 is loosely mounted, this piece being held in place by the innerend of a spring metal bar 14 which is held to the underside of the anglepiece 10 by two screws 15 and 16 at opposite sides of the piece 13, theinner end of this spring bar 14 abutting and resting against the lug orshoulder 11. The free'end of each bar rests loosely in a recess or notch18 formed in a bar 19A on the underside of each pedal, which bar isgradually inclined from the notch downward so as to form an inclinedtrack for the free end vof the spring bar 14 for the purpose of properlyguiding the ends of the said bars into the notches 18 when the pedalsupporting frame 5 is swung down into position, shown in lull lines. Bymeans of the screws 15 and 16 the inner end of the bar 14 can be soadjusted as to give the bar the proper inclination. and so that the ireeend of this bar 14 will rest properly in the notch .18. As a pedal isdepressed, the corresponding spring bar 14 is bent slightly and isforced downward and rearward and acting on the ai'iglo piece 10 forcesthe corresponding movable board 9 of one bellows 1 to the rear, therebyexpanding said bellows and exhausting the air from the bellows 3 and asthe pressure on the corresponding pedal 4 is released, the expandingspring 2 of said bellows forces the movable board 9 toward the front ofthe casing and collapses the bellows whereby the air drawn into thebellows is forced out and so on.

It will be observed that there is no hinge joint at the inner end o'lthe bar 14 which transmits motion 'from the pedal to the bellows andhence no possibility of producing disturbing noises such as would beproduced if an ordinary hinge joint were provided which might be sotight as to squeak or so loose as to produce a rattling1 noise.

As shown the free ends of the bars 14 rest loosely in the notches orrecess 18 oi' the pedals. When the instrument is not in use and thepedals are not required, the operator merely swings the frame 5 upwardand into the casing into vertical position as indicated in dotted linesand the pedals 4 swing upward into the position shown in dotted lines.When the pedals are required the frame 5 is swung downward and outwardand the undersides of the pedals come in contact with the free ends ofthe bar 14 and slide along the ends of the bars andsuch ends slide upthe inclined part 19 on the underside of the pedals until the free endsoi' the bars 14 arrive at the notches 18 into which they snap and thepedals are now ready for use again for pumping air.

I-Iaving described my invention what I claim as new and desire to secureby Letters Patent is 1. The combination with a pedal and a bellows, of ameans 'for transmitting motion from the pedal to the bellows and fromthe tending from the angle piece to the pedal bellows to the pedal,which means consists of bellows, of an angle piece connected with asingle and continuous element connected with one of these elements andloosely in oontact with the other, substantially as set forth..

2. The combination with a pedal and a bellows, of a flexible ineaiis fortransmitting motion from the pedal to the bellows, and from the bellowsto the pedal, which means is mounted. on one of these two elements andloosely in Contact with the other, substantially as set forth.

3. The combination with a pedal and a bellows, of a spring metal barexteni'lingfroin the bellows to the pedal7 substantially as set forth.

4. The combination with a pedal and. a bellows, of a spring metal barconnected with the movable board of the bellows and eX- tending to thepedal, substantially as set forth.

5. The combination with a pedal and a bellows, of a spring metal barconnected with the movable boaid. of the bellows at one end and havingits opposite end rested loosely against the pedal, substantiallwT as setforth.

6. The combination with a pedal having a notch in its under surface, ofa bellows anda bar of spring metal having one-end connected with themovable board of the bellows, and the opposite end rested loosely in thenotch in the pedal, substantially as set forth.

7. The combination with a pedal and a bellows, of an angle piece securedto the movable board of the bellows at the swinging end of the saine anda spring metal bar ex- 7 substantially set forth.

S. The combination with a pedal and a bellows, of an angle pieceattached. to the movable board of the bellows at the swinging end of thesame, a lug on saidv angle piece and a spring metal bar held on theangle piece, one end of said bar resting against the lug of the anglepiece and the other resting against the underside of the pedal,substantially as set forth.

9. The combination with a pedal and a the movable board of the bellowsat the swinging end of the saine, a flexible metal bar held at one endon said. angle piece, the

opposite end of the bar resting against the underside of the bellows anda wood cylinder interposed between the bar and the angle piece,substantially as set forth.

10. The Combination with a pedal andv a bellows, of an angle piececonnected with the movable board of the bellows at the swinging end ofthe same, a flexible metal bar held at one end on said angle piece, theopposite end of the bar resting against the underside of the bellows anda woody cylinder interposed between the bar and the angle piece, anadjusting screw passing through the bar into the angle piece at eaehside of the cylinder, substantially as set forth.

l1. rfhe combination with a pedal and a bellows, of an angle piecesecured to the movable board of the bellows at the swinging end. of thesame and provided with a notch, awood cylinder in said notch, a springmetal bar resting against said cylinder, a holding device passed throughthe bar into the angle piece and confining the roller between the barand the'angle pieee, said metal bai' resting against the underside ofthe pedal, substantially as set forth.

12. The combination with a pedal and a bellows, of a raised part on. theunderside of the bellows. which raised part is provided with a notch,the edge of this raised part being beveled from said notch toward thcpivoted end of the pedal, a bai' attached to the bellows and having itsend rested loosely in the notch on the underside of the pedal,substantially as forth.

Signed at New York city in the county of New York and State of New Yorkthis 29th day of January A. D. 1908.

GEORGE B. KELLY.

lVitn esses:

J. E. MEADE, D. C. HiiiNs.

